I was using Google Call the other day and noticed that I could hardly hear the other person on my MBP (Snow Leopard). Eventually I found the volume level on Win XP (on parallels) was very low so I turned it way up and all was fine. Then I noticed that the volume had gone down again. Then I watched in amazement when I clicked on the volume icon in the task bar and watched the ghost in the machine magically moving the volume level up and down without my assistance. This is a new one for me. What gives?